Concrete-mixer.



PATBNTED DEC. 19, 1905.

D. WARNER. CONCRETE MIXER.

APPLICATION FILED MAR.2Z,1905.

2 SHEETS-SHEET l.

inventor,

Attorneys.

No. 807,522. PATBNTEDDEO. 19, 1905. D. WARNER. CONCRETE MIXER.

APPLICATION FILED MAR.22,1905,

2 SHEETS-SHEET 2.

Z? l L 2.9 2

Inventor,

Witnesses' W by J Attorneys;

UNITED STATES PATENT OFFICE.

DANIEL WARNER, OF BRONSON, MICHIGAN, ASSIGNOR OF ONE-FOURTH TO GRANT FARRAND AND ONE-FOURTH TO JOSEPH K. FARRAND, OF

BRONSON, MICHIGAN.

CONCRETE-MIXER.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filedMaroh 22,1905. Serial No. 251,482.

To all whom, it may concern.-

Be it known that I, DANIEL WARNER, a citizen of the United States, residing at Bronson, in the county of Branch and State of Michigan, have invented a new and useful Concrete- Mixer, of which the following is a specification.

This invention relates to concrete-mixers.

The object of the invention is to provide a concrete-mixer having a novel assemblage of mechanism adapted to effect thorough comingling of the sand and cement, the separation therefrom of any coarse materials and trash, the proper admixture of the materials with Water, and a final incorporation of the materials to produce a high-grade cement.

Wit-h the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a concrete-mixer, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts, Figure 1 is aview in side elevation of a machine constructed in accordance with the present invention. Fig. 2 is a similar view, taken from the opposite side of the machine to that shown in Fig. 1. Fig. 3 is a view in plan of the hopper. Fig. 4: is a view in vertical longitudinal section through the hopper, showing more particularly the mechanism by which the amount of materials discharged from the hopper may be positively controlled. Fig. 5 is a perspective detail view of the combined shaking table and screen.

The frame of the machine is constructed, preferably, of angle-iron, and it consists of base-beams 1, pairs of vertical beams 2, 3, 4E, and 5, secured to the base-beams, and pairs of longitudinal beams 6, 7, and 8, which are combined with the vertical beams 4 and 5 in any preferred manner. By thus constructing the frame one that is exceedingly strong, durable, and light is provided and that will withstand the jars and vibrations incident to use without becoming unsteady or shaky.

Supported in any suitable manner upon the pairs of beams 8 is a hopper (shown in detail in Figs. 3 and 4) which is divided by a vertical partition 9 into two compartments, 10 and 11, of unequal size, the larger compartment 10 being designed to receive the sand, which is supplied thereto from any suitable source, and the compartment 11 the cement,which also is supplied thereto from any suitable source. The end walls 12 of the hopper are inclined toward each other for about one-half the height of the hopper and thence sharply incline at 13, forming therebyarelativelynarrowdischargeopening 14:, through which the material escapes,the partition,as shown in Fig.4, being extended practically to the discharge-opening, thereby to keep the sand and cement properly separated until they reach the point of discharge,where they combine and pass to a combined screen and table, presently to be described. As it will be essential under different conditions to vary the proportions of the cement to the sand, a suitable graduating means is employed, which consists of two slides 15 and 16, constituting a portion of the bottom and disposed on opposite sides of the partition and mounted for reciprocatory movement in guides 17, secured to the under side of the hopper. Each of these slides is actuated to vary the size of the discharge-opening by means of a link 18, one end of which is secured to the slide and the other end of which connects with a rock-lever 19, carried by one end of a shaft 20, journaled in the longitudinal beams 8, the other end of the shaft having secured to it a lever 20, which is adapted to traverse a graduated scale 21, as clearly shown in Fig. 1. By adjusting these levers the slides will be caused to control the discharge of the materials, so that thorough mixing of the exact proportions thereof may be secured.

The means for causing the initial mixing of the materials as they escape from the hopper consists of a plate 22, which carries on opposite sides fingers 23 and 24, the latter being shorter and which work across the upper faces of the slides 15 and 16, as clearly shown in Fig. 4, the plate and fingers constituting a disintegratorthat is to say, it operates to break up and reduce to a fine condition any lumps of sand and cement that might otherwise pass through, and thus result in the production of acement that would be lumpy, and therefore not suited for fine work. In order to cause the disintegrator 22 to move in a true line across the slides of the hopper, there is provided aguide or keeper 25 on each side of the hopper, the same being of an inverted-U shape and bolted or otherwise rigidly secured to the horizontal beams 7.

The means for imparting reciprocatory movements to the disintegrator consists of a vertical rock-shaft 26, which is journaled in suitable bearings 27, secured to the horizontal beams 6 and 8, and carries near its upper end an arm 28, the free end of which is provided with a slot 29, through which extends a pin 30, carried by the plate 22. At apoint near the lower end of the shaft is secured a second arm 31, with which connects one end of a pitman-rod 32, the other end of which is journaled on a crank-pin 33, carried by a flywheel 34. It will be seen that when the flywheel is rotated that a partial revolution will be imparted to the shaft 26 and from this, through the medium of the arm 28, the rotary motion is converted into reciprocatory movement, whereby the disintegrator will be caused rapidly to vibrate across the slides 15 and 16, and thus finely break up and divide any ma terial thereon. The fiy-wheel 34 is mounted upon one end of the shaft 35, which is journaled in suitable bearings, supported by the vertical beams 4 and horizontal beams 6, and has secured to its other end a pinion 36, which meshes with a gear-Wheel 37, mounted upon a stub-shaft 38, projecting from one of the beams 4, the said gear-wheel being driven by any suitable means, as by power or by a crank 39, as shown.

Arranged below the hopper is an agitatingtable 40, which is supported on an incline by means of pairs of hangers 41 and 42, pivoted at their upper ends to the inner sides of the vertical beams 4 and 5 and at their lower ends at 43 and 44 to the sides of the table. In order to render the table adjustable, thereby to vary its angle of inclination, the pair of hangers 42 is provided with a plurality of orifices 45, which are adapted to be engaged by the bolts or pins that hold the hangers combined with the supporting-frame, and by this arrangement it will be seen that the operative plane of the table may be varied at will to meet the different requirements that may arise in making different kinds of cement. The table embodies a trunk or spout 46, which is rectangular in cross-section and projects some distance into a rotary mixer 47, presently to be described. The upper or receiving end of the table is open and is provided with inclined sides 48 and a rear wall 49, and arranged at any desired distance below the upper edges of the sides and end portions 48 and 49 is a screen 50, which may be of any desired mesh and is carried by aframe 51, combined in any suitable manner with the head of the table to present, such as pebbles, or trash, such as sticks or the like, is separated from the mass and passesoif the open end of the table, while the finer portions of the material pass through the screen, thence through the trunk and into the mixer 47. The means for imparting vibratory motions to the agitating-table 40 comprises a pair of links 52 and 53, the link 52 said rock-shaft being provided with stirrerarms 59 for causing thorough admixture of the ingredients of the cement. The drumis rotated from the shaft 35 by a bevel-gear 60, which meshes with a similar gear 61, carried by the shaft 55, as shown in Fig. 2.

Supported by the vertical beams 4 is a tank 62, with the bottom of which connects a pipe 63, that extends to the discharge end of the cylinder and has combined with it a sprinklersection 64, which projects into the drum, a valve 65, carried by the pipe 63, serving to control a supply of water to the drum. The pipe is supported and held from hearing against the drum by a standard 66, carried by the cross-beams 57.

In order to keep the cylinder clean and to prevent accumulation thereon of the cement, a scraper 67 is employed near its outer end which is supported by the vertical beams 2 and engages the inner sides of the drum. It will be noted by reference to Figs. 1 and 2 that the materials escaping from the trunk I travel the greater portion of the length of the drum before being hydrated, and this will operate to insure a positive mixing of the ingredients before the final mixture with the water.

It will be seen from the foregoing description that although the machine of this inven tion is exceedingly simple of construction that it combines in a feasible and practical manner all of the essentials requisite to the production of a thoroughly efifective machine and, moreover, that by the employment of the disintegrator and the agitating-table that a posi tive separation of all trash and undesirable material takes place before the product passes to the drum, thereby insuring the output of a smooth and even product.

Having thus described the invention, what is claimed is 1. In a concretemixer, the combination with a supporting-frame, of a hopper, a partition arranged therein, sliding sections combined with and constituting the bottom of the hopper, an agitator disposed upon the upper sides of the said sections,mechanism for reciprocating the agitator, and an adjusting-lever combined by interposed mechanism with each of the sections.

2. In a concrete mixer, the combination with a supporting-frame, of a hopper, a partition arranged therein, sliding sections combined with and constituting the bottom of the hopper, an agitator disposed upon the upper sides of the said sections and embodying two series of fingers of unequal lengths, and mechanism for reciprocating the agitator.

3.. In a concrete-mixer, the combination with a supporting-frame, of a hopper, a partition arranged therein, sliding sections combined with and constituting the bottom of the hopper, an agitator disposed upon the upper sides of the said sections, mechanism for reciprocating the agitator, levers combined by interposed mechanism with the sections, and graduated scales with which the levers coact.

4:. In a concrete-mixer, the combination with a frame, of -a hopper, an agitator disposed upon the upper face of the bottom of the hopper, means for reciprocating the agitator, a table disposed beneath the hopper and having its intake end provided with a screen,

and means for imparting vibratory movements to the table.

5. In a concrete-mixer, the combination with a frame, of a shaft carrying at one end a driven pinion and at its other end a fly-wheel, a hopper, a disintegrating element arranged on the upper side of the hopper, a rock-shaft operatively connected with the disintegrator, a pitman connecting the fiy-wheel and the rock-shaft, a vibratory table disposed beneath the hopper, and pitman-rods connecting the table and the fly-wheel and the pinion.

6. In a concrete-mixer, the combination with a frame, of a hopper, an agitator disposed upon the upper face of the bottom of the hopper, means for reciprocating the agitator, a table disposed beneath the hopper and having its intake end provided with a screen, means for imparting vibratory movement to the table, and a rotary drum into which the discharge end of the table projects.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

DANIEL WARNER.

Witnesses:

F. M. RUDD, R. 'D. STRANG. 

